Iron Golem, Snow Golem, Ender Dragon and Wither Spawn Eggs in Old-type worlds are completely black

Iron Golem, Snow Golem, Ender Dragon and Wither Spawn Eggs in Old-type worlds have black textures as opposed to their normal ones.

Steps to Reproduce:

1. Import the attached world
2. Get an Iron Golem/Snow Golem Spawn Egg from the Creative inventory or get an Ender Dragon/Wither Spawn Egg using commands (/give @s ender_dragon_spawn_egg or /give @s wither_spawn_egg)

Observed Results:
The spawn eggs have completely black textures

Expected Results:
The spawn eggs have their normal textures

Screenshots/Videos:
Attached